Method of making and sealing packages



vJ. G. JONES.

METHOD 0F MAKING AND vSEALING PACKAGES. APPLICATION FILED'MAR. 22. 192|.

' mm@ May 9,1922.

WITNESS INVENTOR Jzw @i Ja f ATTORN EYS.

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JOHN G'. JONES, OF-ROCHESTER, NEW YORK, lASSIG-NOR TO EASTIVLAN KODAKCOMPANY, OF ROCHESTER, NEW YORK, A CORPORATION OF. NEW YORK.

METHOD OF MAKING AND SELINCiy PACKiAG-ES.

Application led yMarch 22, 1921.

W. Lovejoy, Serial No. 381,728, filed May 15,

The object of my invention is to make' packages of the characterdescribed in a simple and economical manner and with tools that may beoperated either manually or by suitable automatic machinery. Furtherobjects will appear hereinafter as I describe more fully the details ofmy invention.

For the purpose of making clearer the steps of my method, I haveillustrated it in a series of diagrammatic figures to which referencewill now be made and in which the .same reference characters referthroughout to the same parts.

Fig. 1 is a cross section of the contents of the package;

Fig. 2 is a section of the contents and wrapper laid upon a suitabledie;

Fig. 3 shows the contents and wrapper forced into the die;

Fig. 4 is the same as Fig. 3 with the punch member in position; f

Fig. 5 is a similar section showing the wrapper bent over by means ofchecking dies;

Fig. 6 shows the punch member and cheeking dies at a further step in theoperation;

Fig. 7 shows the sealing member being applied in the final step of theprocess;

Fig. 8 is a perspective View of a finished packa e which has been cuttransversely.

As 1s disclosed more fully in the application above identified, thepackage contains sheets of sensitized film 1, upon opposite sides ofwhich are sheets of protective paper 2. These sheets are enclosed in awrapper 3 which isi. bent around the edges of the packages to formoverlying flanges 4, the latter being held in placeby a sheet or label5, the under surface of which is coated with a nonhygroscopic adhesivematerial designated 6.

Specification of Letters Patent.

Patented May 9, 1922'.

serial No. 454,522.

The sheets of film and backing paper of the same size -and shape arefirst assembled in a group, asl indicated in Fig. 1 This constitutes thearticle to be wrapped, and this assemblage as a uni-t is placed upon asuitably diminished sheet of opaque wrapping material 7, which ispositioned ,over a die member 8 having a bottom 9 and a'rel,

cess 10 of the same shape as the assembled f sheets and of such a sizethat when the sheets in the wrapper are forced down into the recess,they will fit snugly therein. The sheets, having been placed 1n registerwith the recess by means of any suitable locating or positioning means,are subjected to pressure with a suitable punching means, so that thesheets and wrapper assume the position shown in F ig.'3. The edges f"the wrapper 3 are bent upwardly to form a continuous marginal flange 11,encircling the sheets and extending beyond their upper surface.

While the character of the punch'membei,`

here used may be varied, I have indicated diagrammatically the formwhich I find most convenient. This consists of a series of bars 12 withfiat outwardly extending feet 13. These members of the punch may beexpanded and retracted by any suitable means. When used to press thesheets and wrapper down into the die recess, they are expanded to aposition to engage the sheets near their edges, as indicated in Fig. 4.While the expanding punch members remain in the position shown in Fig.4, I cause cheeking dies A14 to be advanced inwardly along the uppersurface of the die 8, so as to engage the outer surface of the flange11. and press it downwardly upon the feet 13 of the punch members. Aseries of these cheeking dies will be arranged around the recess in sucha way that they can be advanced simultaneously so as to press the fiange11 over uniformly to -form the overturned fiange 4. The members of thepunch Y are then retracted to the position shown in Fig. 6 and the punchremoved. The cheek-` Iing dies are then partially retracted to a will beso adjusted thatthe seal 5 will just it therein so that the edges of thechecking dies form positioning means for the proper placing of the seal5. Ordinarily this seal will also be a label containing any printedmatter, directions, etc., as may be deemed advisable. This seal, it willbe noticed, overlaps the edges of the flanges 4. This is now subjectedsimultaneously to pressure and heat. A suitable tool for such anoperation is indicated at 17 in Fig. 7. This is a hollon7 tool bearingat the edges only upon the seal, and having aroundits edge a heatingunit 18. The bearing face of the tool 1s indicated as 19. When this ispressed down upon the edges ofthe seal, the latter will be subjectedsimultaneously to pressure and heat and will be caused to adhere to theoverturned Hanges 4. l

As a convenience in operation, li connect to the central-bore 20 of thetool, a suitably controlled suction or vacuum apparatus. By means ofthis a partial vacuum may be established in the chamber 21 within theface 19,`

and the tool be used to pick up one by one the seal members from a pileand to carry them to the point Where they will be positioned. When theseal is thus positioned, the connection to the vacuum may be broken,whereupon the tool releases its hold upon the seal and can be moved awayafter the seal has been pressed in place. There is shown an aperture 22in bottom member 9 of the die through which a suitable tool or membermay be thrust to expel the package after it is completed.

Tt will be seen that by means of the partial retraction ofthe checkingdies, lf have a very convenient method of holding the package in placein the die 8, and at the same time means for properly positioning thelabel or seal 5. Since a package containing a sensitized material mustbe securely sealed, it is important that the seal should be properlypositioned and make good contact with the overturned flanges all the wayaround the package.

The feet 13 of the expanding punch serve,

when in expanded position, to form an abut-` ment over which the flanges11 are sharply bent when the checking dies 14: are moved against them.At all points during the making of the package the latter is securelyheld in place and the operations can be precisely and accuratelyperformed. The various operations may be performed by toolswhich aremanually controlled or by mechanism Which may be partially or entirelyautomatic in their operation. The use of such) a mechanism would not benecessary for the proper carrying out of this method and the detailsthereof are, therefore, not essential to an understanding of myinvention.

Having thus described my invention what c iaiaoae ll claim as new anddesire to secure by lLetters Patent is:

1. The method of wrapping an article comprising the following steps:placing the article in a flanged wrapper in a snugly fitting recess in a.die member, bending the flanges over the article by means'of cheekingdies, positioning said cheeking dies to leave a space of predeterminedsize, positioning in such space a sheet of material of correspondingsize and coated with an adhesive material and Submitting it to pressure.

2. The method ofl wrapping an article comprising the following steps:placing the article in a wrapper having flanges around the edge andextending abovev the article and in a snugly. fitting recess in a diemember, moving checking dies against the flanges and over the article tobend the flanges down against the upper surface of the article,partially retracting said checking dies to leave a space ofpredetermined size, positioning in such space a sheet of materia-l ofcorresponding size, andV coated with a material that is adhesive whenlheated, and submitting it to the simultaneous action of pressure andheat.

3. The method of Wrapping an article comprising the following steps:placing the article in a flanged wrapper in a snugly fitting recess of adie member, bending the flanges over the material by means of cheekingdies, positioning the checking dies to leave a space of predetermineddimensions, greater than the space between the downturned flanges,positioning in said spacebe-A tween the dies a sheet of material ofcorresponding size and coated with an adhesive, and submitting it topressure to cause the last named sheet to adhere to the flanges and sealthe package.

t. The method of wrapping an article comprising the following steps:placing the article on a sheet of wrapping material, forcing it into adie having a snugly fitting aperture by means of a plunger with thinexpanding, bearing members, thus forming in the wrapping materialflanges extending abovey the article, moving checking dies against theflanges and over the article to bend the flanges down against the uppersurface of the article, positioning said cheeking dies to leave a spaceof predetermined size, greater than the space left between theoverturned flanges, positioning in such space a sheet of material ofcorresponding size and coated with a material that is-adhesive whenheated, and submitting it to the simultaneous action of pressure andheat, to cause the last named sheet to adhere to the flanges and sealthe package.

5. T he method of wrapping an article comprising the following steps:placing the article on a sheet of Wrapping material over relapse ing aheated vacuum head, a label member with an adhesive under surface, andof the size of said space, and pressing'said label in said space, thelabel being caused by the pressure and hea-t to adhere to 'the saidturned over flanges, and relieving the vacuum in the tool to release thelabel.

Signed at Rochester, New York, this 17th day of March, 1921.

JOHN Gr. JONES.

